X0306 4 2021-03-01 0 0000860546 CORPORATE OFFICE PROPERTIES TRUST OFC 0001834053 Hartman Todd W. 6711 COLUMBIA GATEWAY DRIVE SUITE 300 COLUMBIA MD 21046 0 1 0 0 EVP & COO Profit Interest Units 2021-03-01 4 A 0 12750 0 A Common Shares 12750 36015 D Each Profit Interest Unit will convert automatically into one share of beneficial interest, designated as a unit (an "OP Unit"), in Corporate Office Properties, L.P. when such Profit Interest Unit becomes vested and upon equalization of its capital account balance. OP Units are redeemable for cash, or, at the option of Corporate Office Properties Trust, exchangeable for common shares of Corporate Office Properties Trust, currently on a one-for-one basis. Represents Profit Interest Units issued pursuant to Corporate Office Properties Trust 2017 Omnibus Equity and Incentive Plan. The Profit Interest Units will vest over three (3) years. David L. Finch, by Power of Attorney 2021-03-03